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166d017d34
linux/drivers/tty
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Hugo Villeneuve b35f8dbbce serial: max310x: prevent infinite while() loop in port startup 
If there is a problem after resetting a port, the do/while() loop that
checks the default value of DIVLSB register may run forever and spam the
I2C bus.

Add a delay before each read of DIVLSB, and a maximum number of tries to
prevent that situation from happening.

Also fail probe if port reset is unsuccessful.

Fixes: 10d8b34a42 ("serial: max310x: Driver rework")
Cc: stable@vger.kernel.org
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Link: https://lore.kernel.org/r/20240116213001.3691629-5-hugo@hugovil.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-01-27 19:09:10 -08:00
..
hvc RISC-V Patches for the 6.8 Merge Window, Part 4 2024-01-20 11:06:04 -08:00
ipwireless tty: ipwireless: remove unused ipw_dev::attribute_memory 2023-11-23 19:16:03 +00:00
serdev serdev: Remove usage of the deprecated ida_simple_xx() API 2023-12-15 14:20:06 +01:00
serial serial: max310x: prevent infinite while() loop in port startup 2024-01-27 19:09:10 -08:00
vt drivers/tty/vt: use standard array-copy-functions 2023-11-25 07:23:16 +00:00
amiserial.c tty: ami: use u8 for characters and flag 2023-12-08 12:02:37 +01:00
ehv_bytechan.c tty: ehv_bytechan: convert to u8 and size_t 2023-12-08 12:02:37 +01:00
goldfish.c tty: goldfish: convert to u8 and size_t 2023-12-08 12:02:37 +01:00
Kconfig Merge commit b320441c04 ("Merge tag 'tty-6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty") into tty-next 2023-08-20 14:29:37 +02:00
Makefile
mips_ejtag_fdc.c tty: mips_ejtag_fdc: use u8 for character pointers 2023-12-08 12:02:37 +01:00
moxa.c tty: moxa: convert to u8 and size_t 2023-12-08 12:02:38 +01:00
mxser.c tty: mxser: convert to u8 and size_t 2023-12-08 12:02:38 +01:00
n_gsm.c tty: n_gsm: convert to u8 and size_t 2023-12-08 12:02:38 +01:00
n_hdlc.c tty: n_hdlc: convert to u8 and size_t 2023-12-08 12:02:38 +01:00
n_null.c tty: ldops: unify to u8 2023-08-11 21:12:47 +02:00
n_tty.c tty: invert return values of tty_{,un}throttle_safe() 2023-10-03 14:31:15 +02:00
nozomi.c tty: nozomi: convert to u8 and size_t 2023-12-08 12:02:38 +01:00
pty.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
rpmsg_tty.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
synclink_gt.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
sysrq.c /proc/sysrq-trigger: accept multiple keys at once 2023-11-25 07:23:16 +00:00
tty_audit.c tty: audit: unify to u8 2023-08-11 21:12:46 +02:00
tty_baudrate.c tty: Fix comment style in tty_termios_input_baud_rate() 2022-08-30 14:22:34 +02:00
tty_buffer.c tty: tty_buffer: use bool for 'restart' in tty_buffer_unlock_exclusive() 2023-10-03 14:31:16 +02:00
tty_io.c USB / Thunderbolt changes for 6.8-rc1 2024-01-18 11:43:55 -08:00
tty_ioctl.c tty: allow TIOCSLCKTRMIOS with CAP_CHECKPOINT_RESTORE 2023-12-15 14:20:03 +01:00
tty_jobctrl.c tty: tty_jobctrl: fix pid memleak in disassociate_ctty() 2023-09-18 11:14:43 +02:00
tty_ldisc.c tty: tty_ldisc: Remove the ret variable 2023-03-09 17:11:18 +01:00
tty_ldsem.c tty/ldsem: Fix syntax errors in comments 2021-12-21 09:15:49 +01:00
tty_mutex.c tty: remove TTY_MAGIC 2022-09-22 16:12:34 +02:00
tty_port.c tty: switch tty_port::xmit_* to u8 2023-12-08 12:02:37 +01:00
tty.h tty: convert THROTTLE constants into enum 2023-10-03 14:31:16 +02:00
ttynull.c tty: make tty_operations::write()'s count size_t 2023-08-11 21:12:46 +02:00
vcc.c tty: vcc: Add check for kstrdup() in vcc_probe() 2023-09-18 11:14:42 +02:00